<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <title>Performs debugging operations</title>
 </head>
 <body class="docs"><div id="layout">
  <div id="layout-content"><div id="function.maxdb-debug" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">maxdb_debug</h1>
  <p class="verinfo">(PECL maxdb &gt;= 1.0)</p><p class="refpurpose"><span class="refname">maxdb_debug</span> &mdash; <span class="dc-title">Performs debugging operations</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.maxdb-debug-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>maxdb_debug</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$debug</code></span>
   ) : <span class="type"><span class="type void">void</span></span></div>

  <p class="para rdfs-comment">
   The <span class="function"><strong>maxdb_debug()</strong></span> can be used to trace the SQLDBC communication. The following
   strings can be used as a parameter to <span class="function"><strong>maxdb_debug()</strong></span>:
  </p>
  <ul class="simplelist">
   <li class="member">TRACE SHORT ON|OFF - Enables/disables method call trace.</li>
   <li class="member">TRACE LONG ON|OFF - Enables/disables method argument and detail debug trace.</li>
   <li class="member">TRACE PACKET ON|OFF|&lt;size&gt; - Enables/disables packet trace, limiting the size of the
           traced object to the specified number of bytes, or 1000 if no size is specified.</li>
   <li class="member">TRACE SQL ON|OFF - Enables/disables high level api trace.</li>
   <li class="member">TRACE TIMESTAMP ON|OFF - Enables/disables a timestamp prefix on each line that is
           traced.</li>
   <li class="member">TRACE SIZE &lt;size&gt; - Limits the size of the trace file to &lt;size&gt; bytes,
           at least 8192 bytes are required.</li>
  </ul>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.maxdb-debug-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   <span class="function"><strong>maxdb_debug()</strong></span> doesn&#039;t return any value.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.maxdb-debug-examples">
  <h3 class="title">范例</h3>
  <div class="example" id="example-1338">
   <p><strong>Example #1 过程化风格</strong></p>
   <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br />maxdb_debug</span><span style="color: #007700">(</span><span style="color: #DD0000">"trace&nbsp;packet&nbsp;200"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$link&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">maxdb_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"MONA"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"RED"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"DEMODB"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;check&nbsp;connection&nbsp;*/<br /></span><span style="color: #007700">if&nbsp;(!</span><span style="color: #0000BB">$link</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Connect&nbsp;failed:&nbsp;%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">maxdb_connect_error</span><span style="color: #007700">());<br />&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></span><span style="color: #FF8000">/*&nbsp;close&nbsp;connection&nbsp;*/<br /></span><span style="color: #0000BB">maxdb_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
   </div>

  </div>
  <p class="para">
   The above example produces no output.
  </p>
 </div>


</div></div></div></body></html>